How many flights depart from Region of Ontario to Illinois on average per day?

As of August 2025, 99 flights take off from Region of Ontario and land in Illinois each day. The most common flight departure time for this route is 6:00a.m., with 45% of daily flights taking off at noon.

What is the cheapest airline that flies from Ontario to Illinois?

Air Canada, American Airlines, and Porter Airlines are the most popular carriers operating from Ontario to Illinois

How long is the flight from Region of Ontario to Illinois?

The average flight duration from Region of Ontario to Illinois depends on which airport you fly into and out of. Flying from Ottawa to Chicago O'Hare Intl Airport is 2h 29m on average, while flying from Toronto to Chicago O'Hare Intl Airport is 5h 56m on average. Chicago O'Hare Intl Airport is the most popular airport in Illinois.

How many flights depart from Region of Ontario to Illinois on average per week?

693 flights are operational weekly from Region of Ontario to Illinois as of August 2025. The most popular departure day for this route is Wed, with 16% of flights per week taking off on this day.

Which airlines fly to Illinois?

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Illinois from Region of Ontario according to our data. Air Canada is the first choice among our users, with 64% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario to Illinois?

Prices for flights from Ontario to Illinois are refreshed on a daily basis.

How many operators does momondo search for flights from Ontario to Illinois?

There are 6 operators available for flights from Ontario to Illinois as of August 2025.

How old do you have to be to fly from Ontario to Illinois?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Illinois.

What documentation or ID do you need to fly to Illinois?

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

C$ 136 Cheap Flights from Ontario to Illinois in 2025

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Find the cheapest flights from Ontario to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

12:05 p.m. - 1:01 p.m.YYZ-ORD

1h 56mdirect

10:00 a.m. - 12:40 p.m.ORD-YYZ

1h 40mdirect

C$ 203Air Canada

Find Deal

Sat, 8 Nov - Sun, 9 Nov

6:40 p.m. - 11:34 p.m.YYZ-ORD

5h 54m1 stop

10:00 a.m. - 12:40 p.m.ORD-YYZ

1h 40mdirect

C$ 215

Find Deal

Sat, 8 Nov - Sun, 9 Nov

11:44 a.m. - 12:39 p.m.YYZ-ORD

1h 55mdirect

9:39 a.m. - 12:32 p.m.ORD-YYZ

1h 53mdirect

C$ 234American Airlines

Find Deal

Tue, 16 Sep - Tue, 23 Sep

7:50 a.m. - 8:39 a.m.YTZ-MDW

1h 49mdirect

5:20 p.m. - 8:02 p.m.MDW-YTZ

1h 42mdirect

C$ 236Porter Airlines

Find Deal

Thu, 11 Sep - Sun, 14 Sep

3:35 p.m. - 4:24 p.m.YTZ-MDW

1h 49mdirect

5:20 p.m. - 8:02 p.m.MDW-YTZ

1h 42mdirect

C$ 237Porter Airlines

Find Deal

Tue, 16 Sep - Mon, 22 Sep

8:55 a.m. - 10:00 a.m.YYZ-ORD

2h 05mdirect

7:10 a.m. - 9:58 a.m.ORD-YYZ

1h 48mdirect

C$ 245United Airlines

Find Deal

Fri, 7 Nov - Sun, 9 Nov

11:44 a.m. - 12:39 p.m.YYZ-ORD

1h 55mdirect

9:55 a.m. - 5:19 p.m.ORD-YYZ

6h 24m1 stop

C$ 248American Airlines

Find Deal

Tue, 16 Sep - Tue, 23 Sep

7:40 p.m. - 11:43 p.m.YYZ-ORD

5h 03m1 stop

6:00 a.m. - 2:14 p.m.ORD-YYZ

7h 14m1 stop

C$ 252United Airlines

Find Deal

Mon, 3 Nov - Thu, 6 Nov

9:00 a.m. - 9:50 a.m.YTZ-MDW

1h 50mdirect

9:35 a.m. - 12:17 p.m.MDW-YTZ

1h 42mdirect

C$ 278Air Transat

Find Deal

Mon, 1 Sep - Mon, 8 Sep

3:35 p.m. - 4:24 p.m.YTZ-MDW

1h 49mdirect

9:35 a.m. - 12:17 p.m.MDW-YTZ

1h 42mdirect

C$ 291Air Transat

Find Deal

Thu, 28 Aug - Sun, 7 Sep

American Airlines flights from Region of Ontario to Illinois

Our best American Airlines deals on Region of Ontario to Illinois flight tickets

American Airlines

16 Sep

YYZ11:44 a.m.Toronto Pearson Intl

1h 55m

ORD12:39 p.m.Chicago O'Hare Intl

23 Sep

ORD9:39 a.m.Chicago O'Hare Intl

1h 53m

YYZ12:32 p.m.Toronto Pearson Intl

C$ 234

Find similar

American Airlines

16 Sep

YYZ11:44 a.m.Toronto Pearson Intl

1h 55m

ORD12:39 p.m.Chicago O'Hare Intl

23 Sep

ORD9:55 a.m.Chicago O'Hare Intl

6h 24m

1 stop

YYZ5:19 p.m.Toronto Pearson Intl

C$ 248

Find similar

American Airlines

5 Sep

YUL5:15 p.m.Montreal Pierre Elliott Trudeau Intl

2h 35m

ORD6:50 p.m.Chicago O'Hare Intl

10 Sep

ORD9:51 a.m.Chicago O'Hare Intl

11h 41m

1 stop

YUL10:32 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 252

Find similar

United Airlines flights from Region of Ontario to Illinois

Our best United Airlines deals on Region of Ontario to Illinois flight tickets

United Airlines

7 Nov

YYZ8:55 a.m.Toronto Pearson Intl

2h 05m

ORD10:00 a.m.Chicago O'Hare Intl

9 Nov

ORD7:10 a.m.Chicago O'Hare Intl

1h 48m

YYZ9:58 a.m.Toronto Pearson Intl

C$ 245

Find similar

United Airlines

3 Nov

YYZ7:40 p.m.Toronto Pearson Intl

5h 03m

1 stop

ORD11:43 p.m.Chicago O'Hare Intl

6 Nov

ORD6:00 a.m.Chicago O'Hare Intl

7h 14m

1 stop

YYZ2:14 p.m.Toronto Pearson Intl

C$ 252

Find similar

United Airlines

7 Nov

YYZ6:40 p.m.Toronto Pearson Intl

5h 54m

1 stop

ORD11:34 p.m.Chicago O'Hare Intl

9 Nov

ORD1:19 p.m.Chicago O'Hare Intl

1h 43m

YYZ4:02 p.m.Toronto Pearson Intl

C$ 254

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Sat 8/11

12:05 p.m.-1:01 p.m.

Nonstop1h 56m

Chicago O'Hare Intl

Sun 9/11

10:00 a.m.-12:40 p.m.

Nonstop1h 40m

C$ 203

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Sat 8/11

6:40 p.m.-11:34 p.m.

1 stop5h 54m

Chicago O'Hare Intl

Sun 9/11

10:00 a.m.-12:40 p.m.

Nonstop1h 40m

C$ 215

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Tue 16/9

11:44 a.m.-12:39 p.m.

Nonstop1h 55m

Chicago O'Hare Intl

Tue 23/9

9:39 a.m.-12:32 p.m.

Nonstop1h 53m

C$ 234

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Thu 11/9

7:50 a.m.-8:39 a.m.

Nonstop1h 49m

Chicago Midway

Sun 14/9

5:20 p.m.-8:02 p.m.

Nonstop1h 42m

C$ 236

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Tue 16/9

3:35 p.m.-4:24 p.m.

Nonstop1h 49m

Chicago Midway

Mon 22/9

5:20 p.m.-8:02 p.m.

Nonstop1h 42m

C$ 237

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 7/11

8:55 a.m.-10:00 a.m.

Nonstop2h 05m

Chicago O'Hare Intl

Sun 9/11

7:10 a.m.-9:58 a.m.

Nonstop1h 48m

C$ 245

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Tue 16/9

11:44 a.m.-12:39 p.m.

Nonstop1h 55m

Chicago O'Hare Intl

Tue 23/9

9:55 a.m.-5:19 p.m.

1 stop6h 24m

C$ 248

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Mon 3/11

7:40 p.m.-11:43 p.m.

1 stop5h 03m

Chicago O'Hare Intl

Thu 6/11

6:00 a.m.-2:14 p.m.

1 stop7h 14m

C$ 252

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Mon 1/9

9:00 a.m.-9:50 a.m.

Nonstop1h 50m

Chicago Midway

Mon 8/9

9:35 a.m.-12:17 p.m.

Nonstop1h 42m

C$ 278

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Thu 28/8

3:35 p.m.-4:24 p.m.

Nonstop1h 49m

Chicago Midway

Sun 7/9

9:35 a.m.-12:17 p.m.

Nonstop1h 42m

C$ 291

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Region of Ontario to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

In general, June is the cheapest month to fly from Region of Ontario to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 309. If you don’t want to visit Illinois in June, then you should wait until April to fly from Region of Ontario, when ticket prices are also cheap, with an average price of C$ 324.

What is the cheapest day to depart on your flight to Illinois?

According to our data, Friday is the cheapest day to fly to Illinois from Region of Ontario. The lowest ticket price found for a Friday departure recently was C$ 782. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Illinois is Tuesday, with ticket prices averaging around C$ 1,245.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Region of Ontario to Illinois during this time can be as low as C$ 613. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are C$ 1,480 on average. Flights to Illinois from Region of Ontario in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Ontario to Illinois flight route?

Fly from Toronto Island to Chicago Midway for the best Ontario - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around C$ 407 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Region of Ontario for as low as C$ 331 on momondo.

What cabin class options are available on Ontario to Illinois flights?

There are 4 cabin classes available to choose from on Ontario to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to Illinois flights?

No. A direct flight is the cheapest option for a flight between Region of Ontario to Illinois.

Cheap Region of Ontario to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Illinois

Best price found	C$ 136
Fastest flight time	1h 49m
Direct flights	Every day
Airports in Illinois	2 airports

The best one-way flight to Illinois from Region of Ontario in the past 72 hours is C$ 136. The best round-trip flight deal from Region of Ontario to Illinois found on momondo in the last 72 hours is C$ 203.

The fastest flight from Region of Ontario to Illinois takes 1h 49m

Direct flights go from Region of Ontario to Illinois every day.

There are 2 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)

Search flight deals

When did momondo last update prices for flights from Ontario to Illinois?
Prices for flights from Ontario to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario to Illinois?
There are 6 operators available for flights from Ontario to Illinois as of August 2025.
How old do you have to be to fly from Ontario to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Region of Ontario to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Region of Ontario to Illinois is De Havilland (Bombardier) DHC-8-400 Dash 8Q, representing 21.14% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 16.72%, Boeing 737-800 at 15.16%, and Airbus A220-300 at 8.64%.

Best airlines flying from Region of Ontario to Illinois

Compare and see reviews for airlines that fly from Region of Ontario to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Porter Airlines	PriceFrom C$ 201	Free Cancellation	Rating 8.0 325 reviews	Search Porter Airlines flights
Air Canada	PriceFrom C$ 266	Free Cancellation	Rating 7.1 9,893 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 280	Free Cancellation	Rating 7.4 8,917 reviews	Search United Airlines flights
American Airlines	PriceFrom C$ 289	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
WestJet	PriceFrom C$ 422	Free Cancellation	Rating 7.2 3,003 reviews	Search WestJet flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Illinois?

It is quick and easy to find Ontario to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

Can I find flights from Ontario to Illinois with flexible booking policies on momondo?

Flights from Ontario to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Ontario.

I’m not ready to book a flight from Ontario to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Illinois

Popular Cities in Illinois

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Cheap flights from Ontario to Illinois from C$ 136

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Illinois departing on 2/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ontario to Illinois

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

American Airlines flights from Region of Ontario to Illinois

Our best American Airlines deals on Region of Ontario to Illinois flight tickets

United Airlines flights from Region of Ontario to Illinois

Our best United Airlines deals on Region of Ontario to Illinois flight tickets

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Use the filters below to find and compare flights from Ontario to Illinois that are best for you.

See travel insights to Illinois from

How to get the cheapest flight ticket from Region of Ontario to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

What is the cheapest Ontario to Illinois flight route?

Fly from Toronto Island to Chicago Midway for the best Ontario - Illinois flight prices

How far in advance should I book a flight to Illinois?

What cabin class options are available on Ontario to Illinois flights?

There are 4 cabin classes available to choose from on Ontario to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to Illinois flights?

No. A direct flight is the cheapest option for a flight between Region of Ontario to Illinois.

What is the cheapest airline that flies from Ontario to Illinois?

Air Canada, American Airlines, and Porter Airlines are the most popular carriers operating from Ontario to Illinois

Which airlines fly to Illinois?

How many flights depart from Region of Ontario to Illinois on average per day?

As of August 2025, 99 flights take off from Region of Ontario and land in Illinois each day. The most common flight departure time for this route is 6:00a.m., with 45% of daily flights taking off at noon.

How many flights depart from Region of Ontario to Illinois on average per week?

693 flights are operational weekly from Region of Ontario to Illinois as of August 2025. The most popular departure day for this route is Wed, with 16% of flights per week taking off on this day.

How long is the flight from Region of Ontario to Illinois?

Cheap Region of Ontario to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Illinois

Best price found

Fastest flight time

Direct flights

Airports in Illinois

When did momondo last update prices for flights from Ontario to Illinois?

How many operators does momondo search for flights from Ontario to Illinois?

How old do you have to be to fly from Ontario to Illinois?

What documentation or ID do you need to fly to Illinois?

What is the most popular plane model from Region of Ontario to Illinois?

Best airlines flying from Region of Ontario to Illinois

Compare and see reviews for airlines that fly from Region of Ontario to Illinois with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Illinois?

Can I find flights from Ontario to Illinois with flexible booking policies on momondo?

How can momondo help me find flights from Ontario to Illinois?

I’m not ready to book a flight from Ontario to Illinois right now. Can momondo alert me if prices change?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular Cities in Illinois

Popular flights according to clicks in the last 7 days on momondo